Strawberries are rich in vitamin C, and they also contain iron and other minerals. Strawberry plants grow in mild regions all over the world. The United States and Canada are leading producers of strawberries. Many countries have developed their own strawberry varieties to suit their climate. These potent little packages protect your heart, increase HDL (good) cholesterol, lower your blood pressure, and guard against cancer. Packed with vitamins, fiber, and particularly high levels of antioxidants known as polyphenols, strawberries are a sodium-free, fat-free, cholesterol-free, low-calorie food.